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1. 開始
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2. Git 基礎
- 2.1 取得一個 Git 倉儲
- 2.2 紀錄變更到版本庫中
- 2.3 檢視提交的歷史記錄
- 2.4 復原
- 2.5 與遠端協同工作
- 2.6 標籤
- 2.7 Git Aliases
- 2.8 總結
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3. 使用 Git 分支
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4. 伺服器上的 Git
- 4.1 通訊協定
- 4.2 在伺服器上佈署 Git
- 4.3 產生你的 SSH 公鑰
- 4.4 設定伺服器
- 4.5 Git 常駐程式
- 4.6 Smart HTTP
- 4.7 GitWeb
- 4.8 GitLab
- 4.9 第3方 Git 託管方案
- 4.10 總結
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5. 分散式的 Git
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6. GitHub
- 6.1 建立帳戶及設定
- 6.2 參與一個專案
- 6.3 維護專案
- 6.4 Managing an organization
- 6.5 Scripting GitHub
- 6.6 總結
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7. Git 工具
- 7.1 Revision Selection
- 7.2 Interactive Staging
- 7.3 Stashing and Cleaning
- 7.4 Signing Your Work
- 7.5 Searching
- 7.6 Rewriting History
- 7.7 Reset Demystified
- 7.8 Advanced Merging
- 7.9 Rerere
- 7.10 Debugging with Git
- 7.11 Submodules
- 7.12 Bundling
- 7.13 Replace
- 7.14 Credential Storage
- 7.15 總結
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8. Customizing Git
- 8.1 Git Configuration
- 8.2 Git Attributes
- 8.3 Git Hooks
- 8.4 An Example Git-Enforced Policy
- 8.5 Summary
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9. Git and Other Systems
- 9.1 Git as a Client
- 9.2 Migrating to Git
- 9.3 Summary
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10. Git Internals
- 10.1 Plumbing and Porcelain
- 10.2 Git Objects
- 10.3 Git References
- 10.4 Packfiles
- 10.5 The Refspec
- 10.6 Transfer Protocols
- 10.7 Maintenance and Data Recovery
- 10.8 Environment Variables
- 10.9 Summary
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A1. 附錄 A: Git in Other Environments
- A1.1 Graphical Interfaces
- A1.2 Git in Visual Studio
- A1.3 Git in Eclipse
- A1.4 Git in Bash
- A1.5 Git in Zsh
- A1.6 Git in Powershell
- A1.7 Summary
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A2. 附錄 B: Embedding Git in your Applications
- A2.1 Command-line Git
- A2.2 Libgit2
- A2.3 JGit
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A3. 附錄 C: Git Commands
- A3.1 Setup and Config
- A3.2 Getting and Creating Projects
- A3.3 Basic Snapshotting
- A3.4 Branching and Merging
- A3.5 Sharing and Updating Projects
- A3.6 Inspection and Comparison
- A3.7 Debugging
- A3.8 Patching
- A3.9 Email
- A3.10 External Systems
- A3.11 Administration
- A3.12 Plumbing Commands
5.1 分散式的 Git - 分散式工作流程
Now that you have a remote Git repository set up as a point for all the developers to share their code, and you’re familiar with basic Git commands in a local workflow, you’ll look at how to utilize some of the distributed workflows that Git affords you.
In this chapter, you’ll see how to work with Git in a distributed environment as a contributor and an integrator. That is, you’ll learn how to contribute code successfully to a project and make it as easy on you and the project maintainer as possible, and also how to maintain a project successfully with a number of developers contributing.
分散式工作流程
Unlike Centralized Version Control Systems (CVCSs), the distributed nature of Git allows you to be far more flexible in how developers collaborate on projects. In centralized systems, every developer is a node working more or less equally on a central hub. In Git, however, every developer is potentially both a node and a hub – that is, every developer can both contribute code to other repositories and maintain a public repository on which others can base their work and which they can contribute to. This opens a vast range of workflow possibilities for your project and/or your team, so we’ll cover a few common paradigms that take advantage of this flexibility. We’ll go over the strengths and possible weaknesses of each design; you can choose a single one to use, or you can mix and match features from each.
集中式工作流程
In centralized systems, there is generally a single collaboration model–the centralized workflow. One central hub, or repository, can accept code, and everyone synchronizes their work to it. A number of developers are nodes – consumers of that hub – and synchronize to that one place.
![Centralized workflow.](png/centralized_workflow.png)
This means that if two developers clone from the hub and both make changes, the first developer to push their changes back up can do so with no problems. The second developer must merge in the first one’s work before pushing changes up, so as not to overwrite the first developer’s changes. This concept is as true in Git as it is in Subversion (or any CVCS), and this model works perfectly well in Git.
If you are already comfortable with a centralized workflow in your company or team, you can easily continue using that workflow with Git. Simply set up a single repository, and give everyone on your team push access; Git won’t let users overwrite each other. Say John and Jessica both start working at the same time. John finishes his change and pushes it to the server. Then Jessica tries to push her changes, but the server rejects them. She is told that she’s trying to push non-fast-forward changes and that she won’t be able to do so until she fetches and merges. This workflow is attractive to a lot of people because it’s a paradigm that many are familiar and comfortable with.
This is also not limited to small teams. With Git’s branching model, it’s possible for hundreds of developers to successfully work on a single project through dozens of branches simultaneously.
整合式管理員工作流程
Because Git allows you to have multiple remote repositories, it’s possible to have a workflow where each developer has write access to their own public repository and read access to everyone else’s. This scenario often includes a canonical repository that represents the “official” project. To contribute to that project, you create your own public clone of the project and push your changes to it. Then, you can send a request to the maintainer of the main project to pull in your changes. The maintainer can then add your repository as a remote, test your changes locally, merge them into their branch, and push back to their repository. The process works as follows (see Integration-manager workflow.):
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The project maintainer pushes to their public repository.
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A contributor clones that repository and makes changes.
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The contributor pushes to their own public copy.
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The contributor sends the maintainer an email asking them to pull changes.
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The maintainer adds the contributor’s repo as a remote and merges locally.
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The maintainer pushes merged changes to the main repository.
![Integration-manager workflow.](png/integration-manager.png)
This is a very common workflow with hub-based tools like GitHub or GitLab, where it’s easy to fork a project and push your changes into your fork for everyone to see. One of the main advantages of this approach is that you can continue to work, and the maintainer of the main repository can pull in your changes at any time. Contributors don’t have to wait for the project to incorporate their changes – each party can work at their own pace.
司令官與副官工作流程
This is a variant of a multiple-repository workflow. It’s generally used by huge projects with hundreds of collaborators; one famous example is the Linux kernel. Various integration managers are in charge of certain parts of the repository; they’re called lieutenants. All the lieutenants have one integration manager known as the benevolent dictator. The benevolent dictator’s repository serves as the reference repository from which all the collaborators need to pull. The process works like this (see Benevolent dictator workflow.):
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Regular developers work on their topic branch and rebase their work on top of
master
. Themaster
branch is that of the dictator. -
Lieutenants merge the developers' topic branches into their
master
branch. -
The dictator merges the lieutenants'
master
branches into the dictator’smaster
branch. -
The dictator pushes their
master
to the reference repository so the other developers can rebase on it.
![Benevolent dictator workflow.](png/benevolent-dictator.png)
This kind of workflow isn’t common, but can be useful in very big projects, or in highly hierarchical environments. It allows the project leader (the dictator) to delegate much of the work and collect large subsets of code at multiple points before integrating them.
工作流程總結
These are some commonly used workflows that are possible with a distributed system like Git, but you can see that many variations are possible to suit your particular real-world workflow. Now that you can (hopefully) determine which workflow combination may work for you, we’ll cover some more specific examples of how to accomplish the main roles that make up the different flows. In the next section, you’ll learn about a few common patterns for contributing to a project.